WO2016172838A1 - 磁共振成像系统和磁共振成像方法 - Google Patents
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- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- the present invention relates to magnetic resonance imaging systems and magnetic resonance imaging methods.
- an operator eg, a doctor
- enter a scanning chamber to manually operate a magnetic resonance system's stent before scanning a target to be scanned (eg, a patient) to be supported by the stent to be scanned
- the target moves into the hole of the magnet located in the magnetic resonance system.
- the operator needs to visually check whether the predetermined portion of the object to be scanned or the object to be scanned is aligned with the scanning position in the hole, and it is necessary to manually operate the holder several times to adjust the position of the object to be scanned when misalignment is observed. Then, it is necessary to start scanning the scan target after the operator exits the scan room.
- exemplary embodiments of the present invention provide a magnetic resonance imaging system and a magnetic resonance imaging method that can shorten scanning operation time and/or can improve alignment accuracy
- a magnetic resonance imaging system comprising: position information acquiring means configured to acquire a position related to a position of a target to be imaged supported by a support relative to a support Information; a magnetic resonance scanning apparatus configured to scan an imaging target according to position information to obtain a magnetic resonance image of an object to be imaged.
- a magnetic resonance imaging method characterized in that the method comprises: acquiring positional information related to a position of a target to be imaged supported by a support relative to a support; treating according to positional information The imaging target is scanned to obtain a magnetic resonance image of the object to be imaged.
- FIG. 1 is a schematic view showing a magnetic resonance imaging system according to an exemplary embodiment
- FIG. 2 is a schematic view showing a field of view indicator according to an exemplary embodiment
- FIG. 3 is a flowchart illustrating a magnetic resonance imaging method, according to an exemplary embodiment.
- FIG. 1 is a schematic diagram illustrating a magnetic resonance imaging system according to an exemplary embodiment.
- a magnetic resonance imaging system may include a position information acquiring device 100 and a magnetic resonance scanning device 300.
- the position information acquisition device 100 can acquire an object to be imaged that is supported by the stent 500 (for example, Patient position information relative to the position of the stent 500.
- the location information acquiring apparatus 100 may include an image sensor 110 and a processor 130.
- the image sensor 110 may acquire a positioning image (eg, an image signal) including the stent 500 and an object to be imaged supported by the stent 500.
- image sensor 110 can be a charge coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.
- CCD charge coupled device
- CMOS complementary metal oxide semiconductor
- the magnetic resonance scanning device 300 may include a magnet 310 having a hole, the holder 500 may be disposed at a front portion of the magnet 310, and the image sensor 110 may be disposed on a front plate of the magnet 310.
- the positioning image can be acquired by the image sensor 110 before moving the object to be imaged to the scanning position in the hole of the magnet 310.
- image sensor 110 may transmit the resulting image signal to processor 130, which may process the received image signal to obtain an image comprising stent 500 and a target to be imaged.
- processor 130 may process the received image signal to obtain an image comprising stent 500 and a target to be imaged.
- the processor 130 is illustrated as a separate component in FIG. 1, the exemplary embodiment is not limited thereto, and for example, the processor 130 may be disposed in the scan room to be combined with the magnetic resonance scanning device 300, or may be disposed in In the operating room.
- the magnetic resonance imaging system can also include a display 710.
- Display 710 can be disposed in the operating room and can receive images acquired by image sensor 110, for example, via processor 130 and displayed in real time.
- an operator can view an image displayed in real time by the display 710 in an operation room, and can manually select an image displayed by the display 710 at a certain time as a positioning image.
- the image acquired by the image sensor 110 may be automatically selected as a positioning image.
- the processor 130 can process the location image to obtain location information related to the location of the object to be imaged relative to the cradle 500.
- the processor 130 can identify an object to be imaged from the location image.
- the processor 130 may identify the entire body and/or various parts of the human body from the positioning image according to the feature information of each part of the human body set in advance.
- the processor 130 can also identify the stand 500 from the positioning image.
- the processor 130 may identify the bracket from the positioning image according to the feature information of the preset bracket.
- the processor 130 may obtain the position information according to the position of the object to be imaged and/or the respective parts of the object to be imaged relative to the position of the stent in the positioning image.
- the bracket 500 can be automatically or manually operated according to the obtained position information to move the target to be imaged to the scanning position, so that the target to be imaged or the desired portion of the target to be imaged is The scanning position is aligned.
- the magnetic resonance imaging system may include a scanning area setting device 700.
- the scan area setting device 700 can set the scan area of the object to be imaged according to the positioning image. Such a scan area may be part of the target to be imaged.
- the holder 500 may be operated automatically or manually to move the object to be imaged into the hole of the magnet 310, thereby aligning the set scanning area with the scanning position.
- the scan area setting device 700 can include a display 710 and a field of view (FOV) indicator 730. As described above, the display 710 can display a positioning image. Field of view indicator 730 can also be displayed on display 710.
- the field of view indicator 730 can represent a scan area that the magnetic resonance scanning device can scan.
- the visual field indicator 730 may have the same shape as the scan area of the magnetic resonance scanning device, and may have a size proportional to the size of the scanning area of the magnetic resonance scanning device.
- FIG. 2 is a schematic diagram showing a field of view indicator according to an exemplary embodiment.
- the operator can move the field of view indicator 730 (eg, using a mouse drag) onto the object to be imaged in the location image to set the portion of the object to be imaged that is covered by the field of view indicator 730. Is the scan area.
- the size of the display of the visual field indicator 730 in the display 710 can be determined based on the positioning image.
- the processor 130 may determine the size of the visual field indicator 730 based on the ratio of the size of the identified stent to the size of the positioned image and the ratio of the size of the predetermined scanning region to the size of the stent.
- the position information of the object to be imaged may be acquired by the position information acquiring means, and the object to be imaged may be aligned with the scanning position according to the position information. Therefore, the accuracy of the alignment can be improved, and the time of the entire imaging operation can be shortened. Further, since the operator can perform the above operation in the operation room without entering the scanning room, the time of the entire imaging operation can be further shortened.
- FIG. 3 is a flowchart illustrating a magnetic resonance imaging method, according to an exemplary embodiment.
- the magnetic resonance imaging method may include acquiring step S100 of positional information related to a position of the object to be imaged supported by the stent relative to the stent, and scanning the object to be imaged according to the positional information. Step S300 to obtain a magnetic resonance image of the object to be imaged.
- step S100 of acquiring location information a positioning image including the cradle and the object to be imaged may be acquired.
- the location image can then be processed to obtain location information related to the location of the object to be imaged relative to the stent.
- the respective objects to be imaged and/or the target to be imaged and the support may be identified from the positional image to obtain positional information based on the identified position of the target to be imaged and/or its respective parts relative to the support.
- the object to be imaged may be moved to the scanning position according to the positioning image.
- the scanning area of the object to be imaged may be set according to the positioning image, and the object to be imaged may be moved into the hole of the magnet to align the set scanning area with the scanning position.
- the positioning image may be displayed in the display; and the visual field indicator displayed in the display may be moved to the target to be imaged in the positioning image to cover the portion of the object to be imaged covered by the visual field indicator Set to the scan area.
- the size of the visual field indicator can be determined based on the ratio of the identified stent in the positioning image.
- position information of an object to be imaged may be acquired, and an object to be imaged may be aligned with a scanning position according to the position information. Therefore, the accuracy of the alignment can be improved, and the time required for the magnetic resonance imaging method can be shortened. Further, since the operator can perform the above steps in the operation room without entering the scanning room, the time required for the magnetic resonance imaging method can be further shortened.
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Abstract
一种磁共振成像系统和磁共振成像方法,磁共振成像系统包括:位置信息获取装置(100),被构造为获取与被支架(500)支撑的待成像目标的相对于支架(500)的位置相关的位置信息;磁共振扫描装置(300),被构造为根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像。因此,磁共振成像系统和磁共振成像方法可以缩短磁共振成像操作的时间,改善对准的精确度。
Description
本发明涉及磁共振成像系统和磁共振成像方法。
根据当前的磁共振成像系统,在对待扫描目标(例如,患者)进行扫描之前,操作者(例如,医生)需要进入扫描室中手动地操作磁共振系统的支架,以将被支架支撑的待扫描目标移动到位于磁共振系统的磁体的孔中。然后,操作者需要用眼睛检查待扫描目标或待扫描目标的预定部位是否与孔中的扫描位置对准,并且在观察到未对准时需要手动地操作支架数次来调节待扫描目标的位置。然后,需要在操作者退出扫描室之后才能够开始对待扫描目标进行扫描。
上面描述的在开始扫描之前的操作增加了磁共振成像操作的时间、降低了用户体验。此外,因为操作者用眼睛检查是否对准,所以难以保证对准的精确度。
发明内容
本发明的示例性实施例的目的在于克服现有技术中的上述的和/或其他的问题。因此,本发明的示例性实施例提供了一种可以缩短扫描操作时间和/或可以改善对准的精确度的磁共振成像系统和磁共振成像方法
根据一个示例性实施例,提供了一种磁共振成像系统,所述磁共振成像系统包括:位置信息获取装置,被构造为获取与被支架支撑的待成像目标的相对于支架的位置相关的位置信息;磁共振扫描装置,被构造为根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像。
根据另一个示例性实施例,提供了一种磁共振成像方法,其特征在于,所述方法包括:获取与被支架支撑的待成像目标的相对于支架的位置相关的位置信息;根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像。
通过下面的详细描述、附图以及权利要求,其他特征和方面会变得清楚。
通过结合附图对于本发明的示例性实施例进行描述,可以更好地理解本发明,在附图中:
图1是示出根据示例性实施例的磁共振成像系统的示意图;
图2是示出根据示例性实施例的视野指示器的示意图;
图3是示出根据示例性实施例的磁共振成像方法的流程图。
以下将描述本发明的具体实施方式,需要指出的是,在这些实施方式的具体描述过程中,为了进行简明扼要的描述,本说明书不可能对实际的实施方式的所有特征均作详尽的描述。应当可以理解的是,在任意一种实施方式的实际实施过程中,正如在任意一个工程项目或者设计项目的过程中,为了实现开发者的具体目标,为了满足系统相关的或者商业相关的限制,常常会做出各种各样的具体决策,而这也会从一种实施方式到另一种实施方式之间发生改变。此外,还可以理解的是,虽然这种开发过程中所作出的努力可能是复杂并且冗长的,然而对于与本发明公开的内容相关的本领域的普通技术人员而言,在本公开揭露的技术内容的基础上进行的一些设计,制造或者生产等变更只是常规的技术手段,不应当理解为本公开的内容不充分。
除非另作定义,权利要求书和说明书中使用的技术术语或者科学术语应当为本发明所属技术领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。“一个”或者“一”等类似词语并不表示数量限制,而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同元件,并不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,也不限于是直接的还是间接的连接。
图1是示出根据示例性实施例的磁共振成像系统的示意图。如图1中所示,根据示例性实施例的磁共振成像系统可以包括位置信息获取装置100和磁共振扫描装置300。
位置信息获取装置100可以获取与被支架500支架的待成像目标(例如,
患者)的相对支架500的位置相关的位置信息。具体地讲,位置信息获取装置100可以包括图像传感器110和处理器130。图像传感器110可以获取包含支架500和被支架500支撑的待成像目标的定位图像(例如,图像信号)。例如,图像传感器110可以为电荷耦合器件(CCD)传感器或互补金属氧化物半导体(CMOS)传感器。
如图1中所示,磁共振扫描装置300可以包括具有孔的磁体310,支架500可以设置在磁体310的前部处,图像传感器110可以设置在磁体310的前面板上。如此,可以在将待成像目标移动到磁体310的孔中的扫描位置之前来通过图像传感器110获取定位图像。
在一个示例性实施例中,图像传感器110可以将得到的图像信号发送到处理器130,处理器130可以对接收的图像信号进行处理,以得到包含支架500和待成像目标的图像。虽然在图1中将处理器130示出为单独的组件,但是示例性实施例不限于此,例如,处理器130可以设置在扫描室中以与磁共振扫描装置300结合,或者也可以设置在操作室中。
如图1中所示,磁共振成像系统还可以包括显示器710。显示器710可以设置在操作室中,并可以例如经处理器130接收并实时地显示由图像传感器110获取的图像。在当前的示例性实施例中,操作者可以在操作室内观察显示器710实时显示的图像,并可以手动地选择显示器710在某一时刻显示的图像作为定位图像。或者,在另一个示例性实施例中,可以自动地将图像传感器110获取的图像选择为定位图像。
处理器130可以对定位图像进行处理,以得到与待成像目标相对于支架500的位置相关的位置信息。具体地讲,处理器130可以从定位图像中识别出待成像目标。例如,当待成像目标为人体时,处理器130可以根据预先设定的人体的各个部位的特征信息来从定位图像中识别出整个人体和/或人体的各个部位。此外,处理器130还可以从定位图像中识别出支架500。例如,处理器130可以根据预先设定的支架的特征信息来从定位图像中识别出支架。在识别出待成像目标和支架之后,处理器130可以根据待成像目标和/或待成像目标的各个部位相对于支架的在定位图像中的位置来得到位置信息。
然后,当处理器130得到位置信息时,可以根据得到的位置信息自动或手动地操作支架500进行移动,以将待成像目标移动到扫描位置,以使待成像目标或待成像目标的期望部位与扫描位置对准。
具体地讲,为了将待成像目标移动到扫描位置,磁共振成像系统可以包括扫描区域设定装置700。扫描区域设定装置700可以根据定位图像来设定待成像目标的扫描区域。这样的扫描区域可以是待成像目标的一部分。当扫描区域设定装置700设定了扫描区域时,可以自动地或手动地操作支架500,以将待成像目标移动到磁体310的孔中,从而使设定的扫描区域与扫描位置对准。为此,扫描区域设定装置700可以包括显示器710和视野(FOV)指示器730。如在上面所描述的,显示器710可以显示定位图像。视野指示器730也可以显示在显示器710上。视野指示器730可以代表磁共振扫描装置可以进行扫描的扫描区域。例如,视野指示器730可以具有与磁共振扫描装置的扫描区域的形状相同的形状,并可以具有与磁共振扫描装置的扫描区域的大小成比例的大小。
图2是示出根据示例性实施例的视野指示器的示意图。如图2中所示,操作者可以将视野指示器730移动(例如,使用鼠标拖拽)到定位图像中的待成像目标上,以将待成像目标的被视野指示器730覆盖的部分设定为扫描区域。在这样的情况下,视野指示器730的显示在显示器710中的大小可以根据定位图像来确定。例如,处理器130可以根据识别的支架的大小与定位图像的大小的比例以及预先设定的扫描区域的大小与支架的大小的比例来确定视野指示器730的大小。
根据示例性实施例,可以通过位置信息获取装置来获取待成像目标的位置信息,并可以根据位置信息来使待成像目标与扫描位置对准。因此,可以提高对准的精确度,并可以缩短整个成像操作的时间。此外,因为操作者可以在操作室中进行上述操作而不需要进入扫描室中,所以可以进一步缩短整个成像操作的时间。
图3是示出根据示例性实施例的磁共振成像方法的流程图。
如图3中所示,根据示例性实施例的磁共振成像方法可以包括获取与被支架支撑的待成像目标的相对于支架的位置相关的位置信息的步骤S100和根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像的步骤S300。
在获取位置信息的步骤S100中,可以获取包含支架和待成像目标的定位图像。然后,可以对定位图像进行处理,以得到与待成像目标相对于支架的位置相关的位置信息。
例如,可以从定位图像中识别待成像目标和/或待成像目标的各个部位以及支架,从而根据识别出的待成像目标和/或其各个部位相对于支架的位置来得到位置信息。
在根据位置信息对待成像目标进行扫描的步骤S300中,可以根据定位图像来将待成像目标移动到扫描位置。具体地讲,可以根据定位图像来设定待成像目标的扫描区域,并可以将待成像目标移动到磁体的孔中以使设定的扫描区域与扫描位置对准。在设定扫描区域时,可以在显示器中显示定位图像;并可以将显示在显示器中的视野指示器移动到定位图像中的待成像目标上,以将待成像目标的被视野指示器覆盖的部分设定为扫描区域。这里,可以根据识别的支架在定位图像中的比例来确定视野指示器的大小。
根据示例性实施例,可以获取待成像目标的位置信息,并可以根据位置信息来使待成像目标与扫描位置对准。因此,可以提高对准的精确度,并可以缩短磁共振成像方法所需的时间。此外,因为操作者可以在操作室中执行上述步骤而不需要进入扫描室中,所以可以进一步缩短磁共振成像方法所需的时间。
上面已经描述了一些示例性实施例。然而,应该理解的是,可以做出各种修改。例如,如果所描述的技术以不同的顺序执行和/或如果所描述的系统、架构、设备或电路中的组件以不同方式被组合和/或被另外的组件或其等同物替代或补充,则可以实现合适的结果。相应地,其他实施方式也落入权利要求的保护范围内。
Claims (17)
- 一种磁共振成像系统,其特征在于,所述磁共振成像系统包括:位置信息获取装置,被构造为获取与被支架支撑的待成像目标的相对于支架的位置相关的位置信息;磁共振扫描装置,被构造为根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像。
- 如权利要求1所述的磁共振成像系统,其特征在于,位置信息获取装置包括:图像传感器,被构造为获取包含支架和待成像目标的定位图像;处理器,被构造为对定位图像进行处理,以得到与待成像目标相对于支架的位置相关的位置信息。
- 如权利要求2所述的磁共振成像系统,其特征在于,支架被构造为根据位置信息将待成像目标移动到扫描位置。
- 如权利要求2所述的磁共振成像系统,其特征在于,磁共振扫描装置包括具有孔的磁体,支架设置在磁体的前部处,图像传感器设置在磁体的前面板上,从而在待成像目标移动到磁体的孔中的扫描位置之前获取定位图像。
- 如权利要求3所述的磁共振成像系统,其特征在于,处理器被构造为从定位图像中识别待成像目标和支架,从而根据识别出的待成像目标相对于支架的在定位图像中的位置来得到位置信息。
- 如权利要求3所述的磁共振成像系统,其特征在于,处理器还被构造为从定位图像中识别待成像目标的各部位和支架,从而根据识别出的待成像目标的各个部位相对于支架的在定位图像中的位置来得到位置信息。
- 如权利要求5或权利要求6所述的磁共振成像系统,其特征在于,所述磁共振成像系统还包括:扫描区域设定装置,被构造为根据定位图像来设定待成像目标的扫描区域,其中,支架将待成像目标移动到磁体的孔中以使设定的扫描区域与扫描位置对准。
- 如权利要求7所述的磁共振成像系统,其特征在于,扫描区域设定装置包括:显示器,被构造为显示图像传感器获取的定位图像;视野指示器,显示在显示器上,并可以被移动到定位图像中的待成像目标上,以将待成像目标的被视野指示器覆盖的部分设定为扫描区域。
- 如权利要求8所述的磁共振系统,其特征在于,处理器根据识别的支架在定位图像中的比例来确定视野指示器的大小。
- 一种磁共振成像方法,其特征在于,所述方法包括:获取与被支架支撑的待成像目标的相对于支架的位置相关的位置信息;根据位置信息对待成像目标进行扫描,以得到待成像目标的磁共振图像。
- 如权利要求10所述的方法,其特征在于,获取位置信息的步骤包括:获取包含支架和待成像目标的定位图像;对定位图像进行处理,以得到与待成像目标相对于支架的位置相关的位置信息。
- 如权利要求11所述的方法,其特征在于,在对定位图像进行处理时,从定位图像中识别待成像目标和支架,从而根据识别出的待成像目标相对于支架的在定位图像中的位置来得到位置信息。
- 如权利要求11所述的方法,其特征在于,在对定位图像进行处理时,从定位图像中识别待成像目标的各部位和支架,从而根据识别出的待成像目标的各个部位相对于支架的在定位图像中的位置来得到位置信息。
- 如权利要求10所述的方法,其特征在于,对待成像目标进行扫描的步骤包括:根据位置信息将待成像目标移动到扫描位置。
- 如权利要求14所述的方法,其特征在于,将待成像目标移动到扫描位置的步骤包括:根据定位图像来设定待成像目标的扫描区域;移动待成像目标,以使设定的扫描区域与扫描位置对准。
- 如权利要求15所述的方法,其特征在于,设定扫描区域的步骤包括:在显示器中显示定位图像;将显示在显示器中的视野指示器移动到定位图像中的待成像目标上,以将待成像目标的被视野指示器覆盖的部分设定为扫描区域。
- 如权利要求16所述的方法,其特征在于,设定扫描区域的步骤还包括:根据识别的支架在定位图像中的比例来确定视野指示器的大小。
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